Revert "Create errors (especially cancellation errors) internally to WebCore, rather"

Source/WebKit/chromium/tests/AssociatedURLLoaderTest.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 36 matching lines @@
 #include <wtf/text/WTFString.h>
 
 #include <gtest/gtest.h>
 
 using namespace WebKit;
 using WebKit::URLTestHelpers::toKURL;
 
 namespace {
 
 class TestWebFrameClient : public WebFrameClient {
+    // Return a non-null cancellation error so the WebFrame loaders can shut down without asserting.
+    // Make 'reason' non-zero so WebURLError isn't considered null.
+    WebURLError cancelledError(WebFrame*, const WebURLRequest& request)
+    {
+        WebURLError error;
+        error.reason = 1;
+        error.unreachableURL = request.url();
+        return error;
+    }
 };
 
 class AssociatedURLLoaderTest : public testing::Test,
                                 public WebURLLoaderClient {
 public:
     AssociatedURLLoaderTest()
         :  m_willSendRequest(false)
         ,  m_didSendData(false)
         ,  m_didReceiveResponse(false)
         ,  m_didReceiveData(false)
@@ skipping 536 matching lines @@
     m_expectedLoader->loadAsynchronously(request, this);
     serveRequests();
     EXPECT_TRUE(m_didReceiveResponse);
     EXPECT_TRUE(m_didReceiveData);
     EXPECT_TRUE(m_didFinishLoading);
 
     EXPECT_FALSE(m_actualResponse.httpHeaderField(headerNameString).isEmpty());
 }
 
 }